Sounds good to me. I would switch Task and Dante spots though.
Task needs support. I like anchor Task a lot, because of great assist, great XF3 damage and decent 1vs1 game but without assist he's actually bad at gaining momentum (which is mandatory for an anchor). Dante just fits the role better IMO.
Also, I don't think you'll be needing an OTG assist if you have Session. It helps extend combo after an H air arrows and you get a full BnB off of it. Plus you can setup unblockable on incoming with Task/Session.
But if you wanna stick with anchor Task, those are a few things you should know.
1) try to avoid having to make 1vs3 comebacks with him. If the match doesn't start well, consider using XF2 Dante or somehow putting Task on point to play Task/Session zoning. However, saving XF for Task is fine when you have the life lead or when the opponent anchor is not a teleporter (Doom, Mags, Sent).
2)XF2 Task with Jam isn't bad either. If you have Dante on the field and have an opportunity to DHC, think about it.
Anyways, I highly recomment you to get familiar with Dante XF2 and XF3 gameplays, because XF Dante the key character to that team IMO.